import React from 'react'
import { Outlet, Link, NavLink, useNavigate } from 'react-router-dom'
export default function Main() {
  const navigate= useNavigate()
  return (
    <div>
      <div>
        <div className="row">
          <div className="col-xs-offset-2 col-xs-8">
            <div className="page-header"><h2>React Router Demo</h2></div>
          </div>
        </div>
        <div className="row">
          <button onClick={()=>{navigate(1)}}>前进</button>
          <button onClick={()=>{navigate(-1)}}>后退</button>
          <div className="col-xs-2 col-xs-offset-2">
            <div className="list-group">
              {/* <Link className="list-group-item active" to="/main/about">About</Link>
          <Link className="list-group-item" to="/main/home">Home</Link> */}
              <NavLink className="list-group-item" to="/main/about">About</NavLink>
              <NavLink className="list-group-item" to="/main/home">Home</NavLink>
            </div>
          </div>
          <div className="col-xs-6">
            <div className="panel">
              <div className="panel-body">
                <Outlet />
              </div>
            </div>
          </div>
        </div>
      </div>

    </div>
  )
}
